fixya doesn't have any spares for anything
and to make matters worse , you have to explain what a 3/4 earth quake is , what it does , what sort of equipment it is to get answers as to where you might go to get spares
post it all again as posts are not linked
tsunamis are formed due to the shift of tectonic plates usually due to earth quake. due to this a large volume of water is shifted creating a wave. once this wave approach the shored they speed up and create collosal damage.